Why? It is not particularly intact at this point. It is just just to huge to mop up without casualties, meaning needs to blow up. Alternatively, the garrison needs to give up because it makes no sense to hide.
Just Putin up a tight perimeter around the place and wait 30 days?
Sounds cheaper than a total rebuild.
Regarding the plant:
DNR said today that they will restore the other plant (where the marines that surrendered were), provide job for everyone who worked on either plant, but will not restore Azovstal.
After the bombing yesterday, it may not be all that repairable....